Professor Sonia Seneviratne

In the first session of the ICAS External Seminar Series, Professor Sonia Seneviratne (ETH, Zurich) will be giving a seminar titled: "Extremes in a changing climate: Conclusions from the IPCC AR6"

The first part of the 6th Assessment report of the Intergovernmental Panel on Climate Change (IPCC) was released on August 9, 2021. For the first time, a full chapter of the IPCC assessment report was dedicated to the topic of weather and climate extremes (IPCC AR6 Chapter 11; Seneviratne et al. 2021). The newest evidence shows that changes in extremes are observed in all regions of the world, and that human influence strongly contributed to observed trends. Some recent events would have been very unlikely to happen without human-induced climate change. With every increment of global warming, changes in extremes become larger, with important implications for changes in heatwaves, heavy precipitation, droughts, and tropical cyclones depending on the region. All regions are projected to be affected by multiple changes in climate extremes and other climatic impact drivers with increasing global warming, in particular above 2°C of global warming. This also includes an increasing occurrence of unprecedented events as climate is moving further away from conditions ever experienced by human civilization.


Seneviratne, S.I., X. Zhang, M. Adnan, W. Badi, C. Dereczynski, A. Di Luca, S. Ghosh, I. Iskandar, J. Kossin, S. Lewis, F. Otto, I. Pinto, M. Satoh, S.M. Vicente-Serrano, M. Wehner, and B. Zhou, in press: Chapter 11: Weather and Climate Extreme Events in a Changing Climate. In: IPCC, 2021: Summary for Policymakers. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu and B. Zhou (eds.)]. Cambridge University Press. In Press.

Link to Prof Seneviratne’s bio